Impact of Strong Anisotropy on Phase Diagram of Superfluid ${}^3$He in Aerogels

Abstract

Recently, one analog of the Anderson's Theorem for the $s$-wave superconductor has attracted much interest in the context of the $p$-wave polar pairing state of superfluid ${}^3$He in a model aerogel in the limit of strong uniaxial anisotropy. We discuss to what extent the theorem is satisfied in the polar phase in real aerogels by examining the normal to polar transition temperature $T_c$ and the low temperature behavior of the superfluid energy gap under an anisotropy of a moderate strength and comparing the obtained results with experimental data. The situation in which the Anderson's theorem clearly breaks down is also discussed.

Minor changes were done, and one reference was added

References in corpus (8)

• Generalized Anderson's theorem for superconductors derived from topological insulators
• Influence of Magnetic Scattering on Superfluidity of 3He in Nematic Aerogel
• Analog of Anderson theorem for the polar phase of liquid 3He in nematic aerogel
• Robustness of unconventional $s$-wave superconducting states against disorder
• Superfluid 3He in squeezed nematic aerogel
• Stability of Half-Quantum Vortices in Equal-Spin Pairing States of ${}^3$He
• The Effect of Magnetic Impurities on Superfluid ${}^3$He in Aerogel
• Half-Quantum Vortex Pair in Polar-distorted B Phase of Superfluid 3He in Aerogels

Cited by in corpus (7)

• Exceeding the Landau superflow speed limit with topological Bogoliubov Fermi surfaces
• Topological nodal line in superfluid ${}^3$He and the Anderson theorem
• Half-Quantum Vortex Pair in Polar-distorted B Phase of Superfluid 3He in Aerogels
• Vortices in polar and $\beta$ phases of ${}^3$He
• Spin vortex lattice in the Landau vortex-free state of rotating superfluids
• Effect of Dipole Energy on Half-Quantum Vortex in Superfluid Polar Phase
• Superfluid Quantum Criticality in Liquid 3He in Anisotropic Aerogel